# US 12,110,410 B2 · Water-resistant acrylic coatings

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- Number: US 12,110,410 B2
- Document ID: US12110410B2
- Status: Granted
- Kind: B2
- Application number: 17/244,540
- Filed: 2021-04-29
- Published: 2021-08-19
- Granted: 2024-10-08
- Earliest claimed: 2019-08-02
- Assignees: Bmic LLC
- Applicants: Bimic LLC
- Inventors: Wilson Cheung; Benjamin Pearl; Kihyun Kim; Adam Chich; Daniel E. Boss; Michael Hagen
- Web page: https://patentgrep.com/patent/US12110410B2

## CPC

- C09D 133/08: Homopolymers or copolymers of acrylic acid esters
- B32B 5/02: characterised by structural features of a {fibrous or filamentary} layer {(layer formed of metallic wires B32B15/02; layer formed of natural mineral fibres B32B19/02; layer formed of wood fibres B32B21/02)}
- B32B 5/028: {Net structure, e.g. spaced apart filaments bonded at the crossing points}
- B32B 5/26: another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)}
- B32B 9/047: {made of fibres or filaments}
- B32B 11/10: next to a fibrous or filamentary layer
- B32B 17/067: {of fibres or filaments}
- B32B 21/10: Next to a fibrous or filamentary layer
- B32B 21/14: comprising wood board or veneer
- B32B 27/12: next to a fibrous or filamentary layer
- B32B 27/304: {comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF}
- B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)}
- E04D 7/00: Roof covering {exclusively consisting of} sealing masses applied in situ; Gravelling of flat roofs
- B32B 2250/02: 2 layers
- B32B 2250/20: All layers being fibrous or filamentary
- B32B 2255/02: on fibrous or filamentary layer
- B32B 2255/20: Inorganic coating
- B32B 2255/26: Polymeric coating
- B32B 2262/101: Glass fibres
- B32B 2307/7265: Non-permeable
- B32B 2419/06: Roofs, roof membranes
- E04D 5/06: by making use of plastics
- E04D 5/10: by making use of compounded or laminated materials, e.g. metal foils or plastic films coated with bitumen
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- E04D: ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS (coverings of outer walls by plaster or other porous material E04F13/00)

## Abstract

A roofing formulation may comprise a first part and a second part. The first part may comprise a coating material, the coating material comprising at least one acrylic latex resin, at least one functional filler, and at least one hydrophobic additive. The second part may comprise an activator formulation. The roofing formulation may be applied as a coating to a roofing substrate. A roofing system may comprise at least one roof substrate and a multi-layer coating system. The multi-layer coating system may comprise at least one top layer and at least one core layer disposed between the at least one top layer and the at least one roof substrate.

## Claims

### Claim 1

A roofing system comprising:
at least one roof substrate; and
a multi-layer coating system, wherein the multi-layer coating system comprises:
at least one top layer,
wherein the at least one top layer comprises at least one hydrophobic additive; and
at least one core layer,
wherein the at least one core layer is disposed between the at least one top layer and the at least one roof substrate, and
wherein the at least one core layer comprises at least one acrylic latex resin;
wherein the at least one core layer is different from the at least one top layer.

### Claim 2 (depends on 1)

The roofing system of claim 1, wherein the at least one hydrophobic additive comprises polyvinylidene fluoride (PVDF).

### Claim 3 (depends on 2)

The roofing system of claim 2, wherein the roofing system further comprises a scrim, wherein the scrim is disposed between the at least one core layer of the multi-layer coating system and the at least one roof substrate.

### Claim 4 (depends on 1)

The roofing system of claim 1, wherein the at least one hydrophobic additive comprises at least one of a hydrophobic copolymer dispersant, a salt of a hydrophobic copolymer dispersant, a nonionic rheology modifier, a polytetrafluoroethylene (PTFE) powder, a silicone surface additive, a polyolefin powder having a molecular weight of 100 kDa to 1000 kDa, or any combinations thereof.

### Claim 5 (depends on 1)

The roofing system of claim 1, wherein the at least one acrylic latex resin comprises at least one of a hydrophobic resin, a self-crosslinking resin, a crosslinkable resin, or any combination thereof.

### Claim 6 (depends on 1)

The roofing system of claim 1, wherein the at least one roof substrate comprises:
at least one steep slope roof substrate,
wherein the at least one steep slope roof substrate has a pitch of 4:12 to 12:12.

### Claim 7 (depends on 1)

The roofing system of claim 1, wherein the at least one top layer has a surface energy of less than 20 mN/m.

### Claim 8 (depends on 7)

The roofing system of claim 7, wherein the at least one core layer has a surface energy of at least 20 mN/m.

### Claim 9 (depends on 1)

The roofing system of claim 1, wherein the at least one top layer has a surface energy of 1 mN/m to 20 mN/m.

### Claim 10 (depends on 9)

The roofing system of claim 9, wherein the at least one core layer has a surface energy of 20 mN/m to 50 mN/m.

### Claim 11 (depends on 1)

The roofing system of claim 1, wherein the at least one top layer has a surface energy that is less than a surface energy of the at least one core layer.

### Claim 12 (depends on 1)

The roofing system of claim 1, wherein the at least one top layer comprises 0.5% to 20% by weight of the at least one hydrophobic additive based on a total weight of the at least one top layer.

### Claim 13 (depends on 1)

The roofing system of claim 1, wherein the at least one core layer comprises 20% to 70% by weight of the at least one acrylic latex resin based on a total weight of the at least one core layer.

### Claim 14 (depends on 1)

The roofing system of claim 1, wherein the at least one top layer further comprises 25% to 65% by weight of at least one functional filler based on a total weight of the at least one top layer.

### Claim 15 (depends on 14)

The roofing system of claim 14, wherein the at least one functional filler comprises at least one of a silica, a wollastonite, a mica, a kaolin, a feldspar, a nepheline syenite, an aluminum hydroxide, a magnesium hydroxide, an aluminum trihydrate, a basalt, a nano-zinc oxide, a platy silica, a treated fumed silica, a non-treated fumed silica, a nano-kaolin, a nano-bentonite, a nano-monomonilorite, or any combination thereof.

### Claim 16 (depends on 15)

The roofing system of claim 15, further comprising at least one pigment, wherein the at least one pigment is different from the at least one functional filler.

### Claim 17 (depends on 1)

The roofing system of claim 1, wherein the at least one core layer further comprises 25% to 65% by weight of at least one functional filler based on a total weight of the at least one core layer.

### Claim 18 (depends on 17)

The roofing system of claim 17, wherein the at least one functional filler comprises at least one of a silica, a wollastonite, a mica, a kaolin, a feldspar, a nepheline syenite, an aluminum hydroxide, a magnesium hydroxide, an aluminum trihydrate, a basalt, a nano-zinc oxide, a platy silica, a treated fumed silica, a non-treated fumed silica, a nano-kaolin, a nano-bentonite, a nano-monomonilorite, or any combination thereof.

### Claim 19 (depends on 18)

The roofing system of claim 18, further comprising at least one pigment, wherein the at least one pigment is different from the at least one functional filler.

### Claim 20 (depends on 1)

The roofing system of claim 1, wherein, when the multi-layer coating system is tested at a dry film thickness of 500 microns, the multi-layer coating system exhibits, after 4 hours at 60° C. and 95% relative humidity, a water infiltration depth of 120 microns or less.